I had been taking notes in OneNote for years, but since 5 years ago I switched to Obsidian, and it completely changed how I manage my knowledge. Here is why it beats the traditional giants.
1. Universal Format (it is a TEXT file)
This is the biggest game-changer.
Word or OneNote: format is .docx or .one formats. You must have their software to read the file. While some third-party tools can open these files, you often risk losing data or formatting.
Obsidian: Every note is just a simple text file (.md).
You can open notes in VS Code, Typora, or any text editor that supports Markdown. Even the built-in Windows Notepad now supports it. If Obsidian disappears tomorrow, your notes are still readable.
2. Data Stays Local
Obsidian stores everything as files and folders directly on your local hard drive.
You decide where it lives (iCloud, Dropbox, xxxDrive, Git, or just offline).
3. Infinite Extensibility
Word and OneNote give you the features Microsoft thinks you need.
Obsidian gives you a foundation, and you build the house.
Community Plugins: Need a Kanban board? There’s a plugin. Need to integrate with your calendar? There’s a plugin. Want it to look like a specific book? There’s a theme.
4. AI Loves Markdown
We are living in the age of AI, and Markdown is the native language of LLMs (Large Language Models).
Clean Context: Because Markdown is plain text without hidden formatting bloat, it is the perfect format to feed into AI agents for analysis or summaries.
5. Direct AI Integration
Because Obsidian is open, developers have built several tools to bring AI directly into your notes.
- Chat with Your Notes: Plugins like "Smart Connections" allow you to chat with your entire notebook. You can ask, "What did I write about React last year?" and it finds the answer instantly.
- Integrated Assistants: Tools like "Obsidian Copilot" bring the power of ChatGPT or Claude right into your sidebar, allowing you to generate ideas, summarize text, or organize thoughts without ever leaving the app.
